diff --git a/plugins/samplesource/sdrplayv3/readme.md b/plugins/samplesource/sdrplayv3/readme.md
index 10dcc43cc..e4412db98 100644
--- a/plugins/samplesource/sdrplayv3/readme.md
+++ b/plugins/samplesource/sdrplayv3/readme.md
@@ -4,6 +4,10 @@
This plugin supports input from SDRplay RSP devices using V3 of SDRplay's API, including RSP1, RSP1A, RSP2, RSPduo and RSPdx.
+
Driver Prerequisites
+
+This plugin requires the SDRplay API V3.07 to have been installed and for the service to be running. It can be downloaded for Windows, Linux and Mac from: https://www.sdrplay.com/softwarehome/
+
Interface
![SDRplay v3 plugin GUI](../../../doc/img/SDRPlayV3_plugin.png)
@@ -111,7 +115,7 @@ Sets the LNA and mixer gain dB. The settings available depended upon the RSP dev
20. IF AGC
-Check this button to enable IF automatic gain control,
+Check this button to enable IF automatic gain control.
21. IF gain